Important Oceanography Stuff
... sediment; eroded particles of dirt, dust, other debris scattered at ocean floor cores; a cylinder of sed material recovered past climate, geology, biology known by study of cores more than half rocks on earth surface are sedimentary rocks [lithified sediments] lithogenous sed; sed derived from weath ...
... sediment; eroded particles of dirt, dust, other debris scattered at ocean floor cores; a cylinder of sed material recovered past climate, geology, biology known by study of cores more than half rocks on earth surface are sedimentary rocks [lithified sediments] lithogenous sed; sed derived from weath ...
Chapter 14: The Internal Processes
... a) Basically, where material is added, crust will sink, but it will rise when material is removed. b) Variety of causes result in isostatic reactions. (1) For example, deposition of sediment or accumulation of glacial ice vs. erosion as ice sheet melts or large body of water drains. C. Continental D ...
... a) Basically, where material is added, crust will sink, but it will rise when material is removed. b) Variety of causes result in isostatic reactions. (1) For example, deposition of sediment or accumulation of glacial ice vs. erosion as ice sheet melts or large body of water drains. C. Continental D ...
(a) Continental Margins
... There are two types of continental Margins (a) passive or trailing margins: margin of continent that moves away from spreading center – Atlantic-style margins (also Artic Ocean, Antarctica and Indian Ocean). Very little volcanic or earthquake activity is associated with passive margins. (b) active o ...
... There are two types of continental Margins (a) passive or trailing margins: margin of continent that moves away from spreading center – Atlantic-style margins (also Artic Ocean, Antarctica and Indian Ocean). Very little volcanic or earthquake activity is associated with passive margins. (b) active o ...
Divergent Boundaries - Phil Farquharson`s Geo
... Subducting plates: The demise of an ocean basin The Farallon plate once occupied much of the eastern Pacific basin zBeginning 180 million years ago the Farallon plate was subducting beneath the Americas faster than it was being generated zThe plate got continually smaller and now only fragments of t ...
... Subducting plates: The demise of an ocean basin The Farallon plate once occupied much of the eastern Pacific basin zBeginning 180 million years ago the Farallon plate was subducting beneath the Americas faster than it was being generated zThe plate got continually smaller and now only fragments of t ...
Lesson 2 - Continental Drift Alfred Wegener.key
... But scientists now think that the Earth's surface is split up into big chunks called tectonic plates and that mountains are formed when these tectonic plates collide. The idea that the Earth's surface is not stable and is made up of parts that move was first put forward by Alfred Wegener. He propose ...
... But scientists now think that the Earth's surface is split up into big chunks called tectonic plates and that mountains are formed when these tectonic plates collide. The idea that the Earth's surface is not stable and is made up of parts that move was first put forward by Alfred Wegener. He propose ...
Paleontological Perspectives on Climate Change
... normal winters and cool summers, which prevent melting • Ice ages more common in the Cenozoic, likely linked with CO2 and land masses ...
... normal winters and cool summers, which prevent melting • Ice ages more common in the Cenozoic, likely linked with CO2 and land masses ...
Unit #5 - Blue Valley Schools
... Earth’s history according to groupings called eons. Each eon contains eras Each era contains periods. Each period contains epochs. These divisions are defined by different life forms found within the rock ...
... Earth’s history according to groupings called eons. Each eon contains eras Each era contains periods. Each period contains epochs. These divisions are defined by different life forms found within the rock ...
The Geological Revolution
... This assumption is natural in the context of prevailing cultural and religious thinking of the time. But why do all estimates get ~6000 years? Writing emerged in the Near East during the 4th millennium BC. Human history is traced through its written records, augmented by oral history (legends and tr ...
... This assumption is natural in the context of prevailing cultural and religious thinking of the time. But why do all estimates get ~6000 years? Writing emerged in the Near East during the 4th millennium BC. Human history is traced through its written records, augmented by oral history (legends and tr ...
23.6 Earth`s History
... At some boundaries between eras, many different organisms became extinct within a relatively short time–an event called a mass extinction. Theories to explain mass extinctions include asteroid impacts, volcanic activity, disease, and climate change. ...
... At some boundaries between eras, many different organisms became extinct within a relatively short time–an event called a mass extinction. Theories to explain mass extinctions include asteroid impacts, volcanic activity, disease, and climate change. ...
Earth System Chapter 17 PowerPoint
... Continental Drift Ancient Climatic Evidence – Various sedimentary rocks offer evidence of vast climatic changes on some continents. – Coal deposits in Antarctica suggested that it must have been closer to the equator. – Glacial deposits found in Africa, India, Australia, and South America suggested ...
... Continental Drift Ancient Climatic Evidence – Various sedimentary rocks offer evidence of vast climatic changes on some continents. – Coal deposits in Antarctica suggested that it must have been closer to the equator. – Glacial deposits found in Africa, India, Australia, and South America suggested ...
Lecture 11A / The Ocean Floor
... These notes and web links are your primary “lecture” content in this class. Additionally, various articles are assigned each week to supplement this “lecture” information. I believe you’ll have enough information to reference without having to purchase a costly textbook. These lecture notes are ver ...
... These notes and web links are your primary “lecture” content in this class. Additionally, various articles are assigned each week to supplement this “lecture” information. I believe you’ll have enough information to reference without having to purchase a costly textbook. These lecture notes are ver ...
The Geology of North America as Illustrated by Native American
... the trace of the foundation of what used to be a dwelling. Therefore, archeologists use indirect evidence such as trash heaps and the types of materials used in construction to infer how ancient, now-gone people lived. Likewise, geologists use indirect evidence to figure out the origin and history o ...
... the trace of the foundation of what used to be a dwelling. Therefore, archeologists use indirect evidence such as trash heaps and the types of materials used in construction to infer how ancient, now-gone people lived. Likewise, geologists use indirect evidence to figure out the origin and history o ...
Lab 8
... 3. Two rocks have the same iron content, yet their remanent magnetization differ in strength. Give at least 3 reasons why the strength of the remanence of a rock does not depend just on its iran content. 4. An American geologist, finding on arrival to New Zealand that his compass does not rotate fre ...
... 3. Two rocks have the same iron content, yet their remanent magnetization differ in strength. Give at least 3 reasons why the strength of the remanence of a rock does not depend just on its iran content. 4. An American geologist, finding on arrival to New Zealand that his compass does not rotate fre ...
Paleoclimatology -
... Effects of the Ice Age From the Bible •Job lived about 300 years after the Flood. This would probably have been during the Ice Age. In Job 38:22-30, God talks about hail, snow, ice, and the freezing of the deep (ocean). If Job lived during the Ice Age, he would have known people who had seen the gre ...
... Effects of the Ice Age From the Bible •Job lived about 300 years after the Flood. This would probably have been during the Ice Age. In Job 38:22-30, God talks about hail, snow, ice, and the freezing of the deep (ocean). If Job lived during the Ice Age, he would have known people who had seen the gre ...
k11 Subdivisions of Precambrian time < Great Lakes - e
... Rocks older than the Cambrian are not widely exposed in Europe where the geologic column was devised. There, Precambrian rocks either are apparently unfossiliferous sedimentary strata called Eocambrian or, where they underlie fossiliferous strata nonconformably, are schists and gneisses, much fold-c ...
... Rocks older than the Cambrian are not widely exposed in Europe where the geologic column was devised. There, Precambrian rocks either are apparently unfossiliferous sedimentary strata called Eocambrian or, where they underlie fossiliferous strata nonconformably, are schists and gneisses, much fold-c ...
Half-life
... approximately 250 million years ago (also the end of the Paleozoic era), was marked by the greatest extinction of the Phanerozoic eon. • During the Permian extinction event, whose cause(s) remain controversial, over 95% of marine species became extinct, while 70% of terrestrial taxonomic families su ...
... approximately 250 million years ago (also the end of the Paleozoic era), was marked by the greatest extinction of the Phanerozoic eon. • During the Permian extinction event, whose cause(s) remain controversial, over 95% of marine species became extinct, while 70% of terrestrial taxonomic families su ...
Chapter 11: Geologic Time And The Rock Record
... In the nineteenth century, geologists began to assemble a geologic column, which is a composite column containing, in chronological order, the succession of known strata, fitted together on the basis of their fossils or other evidence of relative age. The corresponding column of time is the geologic ...
... In the nineteenth century, geologists began to assemble a geologic column, which is a composite column containing, in chronological order, the succession of known strata, fitted together on the basis of their fossils or other evidence of relative age. The corresponding column of time is the geologic ...
radioactive decay.
... proportion of 14C is nearly constant throughout the atmosphere and biosphere. Living organisms have the same proportion of 14C In their bodies as exists in their environment. No carbon is added after death, so by measuring the radioactivity remaining in an organic sample, we can calculate how many h ...
... proportion of 14C is nearly constant throughout the atmosphere and biosphere. Living organisms have the same proportion of 14C In their bodies as exists in their environment. No carbon is added after death, so by measuring the radioactivity remaining in an organic sample, we can calculate how many h ...
California is mostly made up of Mesozoic and Cenozoic materials
... where sediments are exposed along the Bakersfield Arch. The bed includes marine vertebrate fossils such as sharks, sea lions, turtles, whales, and other large life forms. The Bone Bed covers 47 square miles and is only about a foot thick. This bed is the most fossil-rich Middle Miocene bone bed in t ...
... where sediments are exposed along the Bakersfield Arch. The bed includes marine vertebrate fossils such as sharks, sea lions, turtles, whales, and other large life forms. The Bone Bed covers 47 square miles and is only about a foot thick. This bed is the most fossil-rich Middle Miocene bone bed in t ...
Brief account of the evolution of the Caribbean Seaway: Jurassic to
... connection first yielded a limited exchange of shallow marine taxa (Smith, 1983; Damborenea, 2000, Aberham, 2001), but with time the waterway widened (Pindell, 1994; Lawver et al., 1999) allowing an increasing exchange of marine animals, including both open and shallow marine taxa, limited during th ...
... connection first yielded a limited exchange of shallow marine taxa (Smith, 1983; Damborenea, 2000, Aberham, 2001), but with time the waterway widened (Pindell, 1994; Lawver et al., 1999) allowing an increasing exchange of marine animals, including both open and shallow marine taxa, limited during th ...
Southwest Scotland: A landscape fashioned by geology
... Before 5,000 years ago. Human occupation began. 11,500 years ago. Vegetation started to recolonise the land with forests established by 5000 years ago. 12,500 to 11,500 years ago. Small corrie glaciers existed in the Galloway and Moffat hills. 15,000 to 12,500 years ago. Rapid deglaciation occurred ...
... Before 5,000 years ago. Human occupation began. 11,500 years ago. Vegetation started to recolonise the land with forests established by 5000 years ago. 12,500 to 11,500 years ago. Small corrie glaciers existed in the Galloway and Moffat hills. 15,000 to 12,500 years ago. Rapid deglaciation occurred ...
Early Paleozoic Geology 1.
... craton margins, consisting of uplifted, folded, metamorphosed marine and terrestrial deposits - often accompanied by intrusive and extrusive igneous rocks (i.e. distinctive suites of rocks). These mountain chains were subject to erosion and became sediment sources for later deposits - shales + greyw ...
... craton margins, consisting of uplifted, folded, metamorphosed marine and terrestrial deposits - often accompanied by intrusive and extrusive igneous rocks (i.e. distinctive suites of rocks). These mountain chains were subject to erosion and became sediment sources for later deposits - shales + greyw ...
No Slide Title
... marine and terrestrial deposits - often accompanied by intrusive and extrusive igneous rocks (i.e. distinctive suites of rocks). These mountain chains were subject to erosion and became sediment sources for later deposits - shales + greywackes in deep marine basins; quartz sands and shales in shallo ...
... marine and terrestrial deposits - often accompanied by intrusive and extrusive igneous rocks (i.e. distinctive suites of rocks). These mountain chains were subject to erosion and became sediment sources for later deposits - shales + greywackes in deep marine basins; quartz sands and shales in shallo ...
23.5 The Restless Oceans
... In general, currents of warm water flow away from the equator along the east side of continents. Currents of cold water flow away from the polar regions along the west side of continents. ...
... In general, currents of warm water flow away from the equator along the east side of continents. Currents of cold water flow away from the polar regions along the west side of continents. ...
Geological history of Earth
The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System.Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.As the surface continually reshaped itself over hundreds of millions of years, continents formed and broke apart. They migrated across the surface, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600 to 540 million years ago, then finally Pangaea, which broke apart 180 million years ago.The present pattern of ice ages began about 40 million years ago, then intensified at the end of the Pliocene. The polar regions have since undergone repeated cycles of glaciation and thaw, repeating every 40,000–100,000 years. The last glacial period of the current ice age ended about 10,000 years ago.